TiO2-immobilized porous geopolymer composite membrane for removal of antibiotics in hospital wastewater

Sanguanpak, Samunya; Shongkittikul, Witaya; Saengam, Chitsuphang; Chiemchaisri, Wilai; Chiemchaisri, Chart

doi:10.1016/j.chemosphere.2022.135760

Cited by 29 publications

(3 citation statements)

References 31 publications

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“…They are stable over time in the complex wastewater mixtures and are difficult to remove using classic water treatment methods; they can adversely affect the wastewater treatment processes (for example the ammonia removal process or chemical oxygen demand removal). There are several ways to remove antibiotics and other contaminants from wastewater, such as adsorption, sonochemical processes, ozonation, membrane technology, aerobic or anaerobic treatment, phytoremediation, biogeochemical methods such as wetlands, chemical disinfection methods such as chlorination, electrochemical oxidation processes, osmosis and electro-osmosis, electro-flocculation, ionizing radiation, and hybrid technologies [ 8 , 10 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 ]. However, it seems that the most effective methods of reducing the level of antibiotics in water are the methods that involve photocatalysis and advanced oxidation processes.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Removal of Antibiotics from Wastewater Using the CeO2/ZnO Heterojunction

et al. 2023

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CeO2/ZnO-based photocatalytic materials were synthesized by the sol-gel method in order to establish heterojunctions that increase the degradation efficiency of some types of antibiotics by preventing the recombination of electron–hole pairs. The synthesized materials were analysed by XRD, SEM, EDAX, FTIR, and UV-Vis. After several tests, the optimal concentration of the catalyst was determined to be 0.05 g‧L−1 and 0.025 g‧L−1 for chlortetracycline and 0.05 g‧L−1 for ceftriaxone. CeO2/ZnO assemblies showed much better degradation efficiency compared to ZnO or CeO2 tested individually. Sample S3 shows good photocatalytic properties for the elimination of ceftriaxone and tetracycline both from single solutions and from the binary solution. This work provides a different perspective to identify other powerful and inexpensive photocatalysts for wastewater treatment.

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Section: Introductionmentioning

confidence: 99%

Photocatalytic Removal of Antibiotics from Wastewater Using the CeO2/ZnO Heterojunction

et al. 2023

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“…The heterointerface between TiO 2 nanoparticles and zeolite has proved beneficial particularly in wastewater treatment. TiO 2 /geopolymer composites are used for the removal of antibiotics from hospital wastewater (Sanguanpak et al, 2022). TiO 2 /zeolite composites are also used for the removal of atenolol from water by photocatalytic degradation or adsorption.…”

Section: Introductionmentioning

confidence: 99%

Controlled growth of TiO2/Zeolite nanocomposites for simultaneous removal of ammonium and phosphate ions to prevent eutrophication

et al. 2022

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In the modern era, problems like eutrophication caused by increased nutrients such as ammonia and phosphorous in freshwater bodies have become the cause of freshwater ecosystem deterioration. To save freshwater by reducing eutrophication, new cost-effective strategies and methods are urgently needed. In this study, titanium oxide nanoparticles dispersed on zeolite were chemically synthesized for the simultaneous removal of phosphate and ammonium ions from aqueous solutions. SEM and XRD analysis were used to characterize the synthesized TiO2/zeolite nanocomposites, which revealed that the synthesized material was more stable and dispersed than zeolite. The nanocomposites removed 38.8% NH4+ and 98.1% PO43− from an initial concentration of both ions of 20 mg 100 ml−1. The removal of both ions was investigated under various conditions including different concentrations of nanocomposites, initial concentration of the solution, temperature, time, and pH. The maximum adsorption of nanocomposites for PO43- was 38.63 mg g−1 at optimal conditions, and 3.75 mg g−1 for NH4+. Kinematics studies showed that both the ions were adsorbed by a pseudo-second-order model. Ion chemisorption occurred as a result of ligand exchange or electrostatic adsorption between ions and nanocomposites. Overall, it was determined that this strategy is a viable and efficient method for simultaneously removing both ions (anionic phosphate and cationic ammonium) from eutrophic waters.

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“…In recent years, many studies have been conducted on immobilization techniques and immobilized biomass materials for the treatment of refractory organic wastewater [ 31 , 32 ], but very few reviews of this research have been published. Therefore, based on previous studies and achievements of the authors in this field, this paper reviews the characteristics of immobilization methods, carriers, and biomass materials in the immobilization process, analyzes the effects of different operational factors in the preparation of immobilized biomasses, and presents applications of immobilized biomass materials in the treatment of refractory organic wastewater and its degradation mechanisms.…”

Section: Introductionmentioning

confidence: 99%

Immobilization of Biomass Materials for Removal of Refractory Organic Pollutants from Wastewater

Liu

Yang

Zhang

et al. 2022

IJERPH

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In the field of environmental science and engineering, microorganisms, enzymes and algae are promising biomass materials that can effectively degrade pollutants. However, problems such as poor environmental adaptability, recycling difficulties, and secondary pollution exist in the practical application of non-immobilized biomass materials. Biomass immobilization is a novel environmental remediation technology that can effectively solve these problems. Compared with non-immobilized biomass, immobilized biomass materials have the advantages of reusability and stability in terms of pH, temperature, handling, and storage. Many researchers have studied immobilization technology (i.e., methods, carriers, and biomass types) and its applications for removing refractory organic pollutants. Based on this, this paper reviews biomass immobilization technology, outlines the mechanisms and factors affecting the removal of refractory organic pollutants, and introduces the application of immobilized biomass materials as fillers for reactors in water purification. This review provides some practical references for the preparation and application of immobilized biomass materials and promotes further research and development to expand the application range of this material for water purification.

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TiO2-immobilized porous geopolymer composite membrane for removal of antibiotics in hospital wastewater

Cited by 29 publications

References 31 publications

Photocatalytic Removal of Antibiotics from Wastewater Using the CeO2/ZnO Heterojunction

Photocatalytic Removal of Antibiotics from Wastewater Using the CeO2/ZnO Heterojunction

Controlled growth of TiO2/Zeolite nanocomposites for simultaneous removal of ammonium and phosphate ions to prevent eutrophication

Immobilization of Biomass Materials for Removal of Refractory Organic Pollutants from Wastewater

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